<template>
  <div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px">
      <el-step title="填写课程基本信息" />

      <el-step title="创建课程大纲" />

      <el-step title="发布课程" />
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover" />
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray">
          <span>共{{ coursePublish.lessonNum }}课时</span>
        </p>
        <p>
          <span>
            所属分类：{{ coursePublish.subjectLevelOne }} —
            {{ coursePublish.subjectLevelTwo }}
          </span>
        </p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>
<script>
import course from "@/api/course/course";
export default {
  data() {
    return {
      saveBtnDisabled: false, //保存按钮是否禁用
      courseId: "", //定义课程id
      coursePublish: {}
    };
  },
  created() {
    this.init();
  },
  methods: {
    //初始化的方法
    init() {
      //获取路由中的id值
      if (this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id;
        //调用根据id查询课程信息回显的方法
        this.getCoursePublishId();
      }
    },
    //1.根据课程id查询最终课程信息
    getCoursePublishId() {
      course.getPublishCourseInfo(this.courseId).then(response => {
        //给最终课程信息对象赋值
        this.coursePublish = response.data.publishCourse;
      });
    },
    //返回修改的方法
    previous() {
      console.log("上一步...");
      this.$router.push({ path: "/course/chapter/" + this.courseId });
    },
    //2.发布课程
    publish() {
      this.$confirm("是否发布课程?", "提示", {
         cancelButtonText: "取消",
        confirmButtonText: "确定",
        type: "success"
      }).then(() => {
        //点击确定，执行then方法
        //调用发布课程的方法(修改字段)
        course.publishCourse(this.courseId).then(response => {
          //删除成功
          //提示信息
          this.$message({
            type: "success",
            message: "发布课程成功!"
          });
          //发布成功跳转到列表页面
          this.$router.push({ path: "/course/list"});
        });
      }); //点击取消，执行catch方法
    }
  }
};
</script>
<style scoped>
.ccInfo {
  background: #f5f5f5;
  padding: 20px;
  overflow: hidden;
  border: 1px dashed #ddd;
  margin-bottom: 40px;
  position: relative;
}
.ccInfo img {
  background: #d6d6d6;
  width: 500px;
  height: 278px;
  display: block;
  float: left;
  border: none;
}
.ccInfo .main {
  margin-left: 520px;
}

.ccInfo .main h2 {
  font-size: 28px;
  margin-bottom: 30px;
  line-height: 1;
  font-weight: normal;
}
.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}

.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}
.ccInfo .main h3 {
  left: 540px;
  bottom: 20px;
  line-height: 1;
  font-size: 28px;
  color: #d32f24;
  font-weight: normal;
  position: absolute;
}
</style>
